Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Overloaded on March 01, 2009, 09:19:59 PM

Title: Transformer question
Post by: Overloaded on March 01, 2009, 09:19:59 PM
Hello,
  This transformer.
115v in at 380 term, 76 out.
115v in at 460 term, 57 out.
Does the 200VA on the label mean 200/76 would be 2.63A ?
And 200/57=3.5A ?
Not sure, ::)
Thanks,
RC
Title: Re: Transformer question
Post by: HimyKabibble on March 01, 2009, 10:21:52 PM
RC,

I get different results:

Using the 380V terminals as inputs, the output is: 220 * (115 / 380) = 66.6V @ 3.0A
Using the 380V terminals as inputs, the output is: 220 * (115 / 460) = 55.0V @3.6A

Keep in mind, those are RMS voltages, so using this in a DC supply will give you around 94V or 78V.

Regards,
Ray L.
Title: Re: Transformer question
Post by: Overloaded on March 02, 2009, 06:08:48 AM
Thanks Ray,
much appreciated,
RC